{
  "createdOn": 1791011529936,
  "format": "text/plain",
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "eventId": "GRB 260930B",
  "body": "Zheng-Hang Yu, Chao Zheng, Shao-Lin Xiong (IHEP) report on behalf of GECAM team:\n\nGECAM-B was triggered in-flight by a burst GRB 260930B at 2026-09-30T18:56:57.900 UTC (denoted as T0), which is also detected by Fermi/GBM (Fermi GBM team, GCN #45789). According to the GECAM-B light curves in about 70-6000 keV, this burst mainly consists of a pulse with a duration (T90) of 1.30 +1.55/-1.20 s. \n\nThe on-ground localization of GECAM-B is:\nRa: 326.3 deg   \nDec: 24.1 deg\nErr: 8.6 deg (1-sigma, statistical only)\n\nThe GECAM-B light curve can be found here:\nhttps://www.bursthub.cn/gcn/2026/9/gecambgrb260930B.png\n\nGravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) mission originally consists of two micro-satellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS).\n",
  "submittedHow": "web",
  "circularId": 45802,
  "subject": "GRB 260930B: GECAM-B detection of a burst",
  "submitter": "yzh807926@163.com"
}